I have decided to take Thomas-W's advice and build a manifold on my door to house (4) Fi IB3 18's on the top and make 2 slot ports on the bottom out of the rectangles already there. The door is 1.25" thick, I will make a template/face of the entire door adding .75" to the thickness. I'll make a 25"x25" panel to plug the ports so I can run true IB as well. Here is a pic he suggested for me.

Quote:

Originally Posted by Thomas-W

Go to Home Depot buy a cheap solid core door, do something like this .......

I will begin tearing the Twin Towers down tomorrow and use the wood to build the manifolds and ports. It will be nice to get the EP4000s out of the HT room cuz I haven't done the fan mods.

I am wasting and tearing apart a very wonderful performing pair of enclosures. Under 10% THD these things hit 124dB @ 10Hz and 130dB @ 23Hz. If I would have braced them better that 25Hz-40Hz would have been fixed. They were 125 cubic feet each with a 12" port 12" long for a 13.4Hz tuning, 2 IB3s per tower.

Krypto, I don't know how I missed this thread but "WOW". I just read all 21 pages and I am amazed with your build and everything you have done in your HT room. Those boxes are huuuuuge! It seems you have had a lot of fun destroying your house. This is a hobby for champions, go big or go home I say. Also, it looks like you have an awesome GF/wife for supporting everything you have done. I know mine would have probably stabbed me in the eye with a rusty screw driver if I had tried to attempt any of this.

Thank you very much Turtlepoker, it has been one long adventure packed with lots of little ones I just can't let it stop, I gotta keep on movin! She's not happy about tearing the towers down at all. I think she will come around

I am sad this never reached 50,000 hits. Can I get just a little love then its retired for good?

To make an honest post, I believe I had the same effect with the doors open vs the doors closed with the towers as well, so that could rule out the bandpass effect on flow vs pressure, however 256 cubic feet inside the listening room could also have had the same bandpass effect.